Valve Covers, Valve Cover Breathers & Components

What Does a Breather Do on a Valve Cover?

A breather on a valve cover is an essential component of an engine's crankcase ventilation system. It helps regulate the pressure inside the engine by allowing gases, including blow-by gases and moisture, to escape from the crankcase. These gases are a byproduct of the combustion process and can create pressure if not properly vented. The breather, often equipped with a filter element, prevents debris from entering the engine while allowing gases to exit. This helps maintain proper engine performance and prevents oil leaks caused by excessive pressure buildup.

Do I Need a Crankcase Breather?

Yes, a crankcase breather is a crucial component for the proper operation of your engine. Without a breather, pressure can build up within the crankcase, leading to a range of issues including decreased engine efficiency, oil leaks, and potential damage to engine seals and gaskets. A properly functioning breather helps maintain a balance between the internal and external pressure of the engine, ensuring optimal performance and reducing the risk of damage.

How Much Does a Valve Cover With a Breather Cost?

The cost of a valve cover with a breather can vary depending on factors such as the brand, materials, and features. Basic valve covers with integrated breathers can start at around $50 to $100. These covers often provide the necessary ventilation function without additional features.

More advanced valve covers with integrated breathers and additional features such as baffles or built-in oil separators can range from $100 to $300 or more. These covers may offer improved oil control and additional protection against oil vapor entering the breather system.

As with any engine component, it's essential to invest in high-quality valve covers and breathers to ensure proper function and engine performance.